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Finding the Fourth Proportional to 368.12, 550.06 and 361.28

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Solution

The fourth proportional to 368.12, 550.06 and 361.28 is: 539.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.12 : 550.06 = 361.28 : x
  2. Step 2: Convert to fraction form
    368.12/550.06 = 361.28/x
  3. Step 3: Cross multiply
    368.12x = 550.06 × 361.28
  4. Step 4: Simplify right side
    368.12x = 198,725.68
  5. Step 5: Solve for x
    x = 198,725.68/368.12
  6. Step 6: Final answer
    x = 539.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.